Equation of state - Wikipedia
In physics and chemistry, an equation of state is a thermodynamic equation relating state variables, which describe the state of matter under a given set of physical conditions, such as pressure, volume, temperature, or internal energy. [1]
Equation of state - Simple English Wikipedia, the free encyclopedia
Equations of state are commonly used to describe the state of gases and fluids. In the real world, equations of state are approximations. They can be quite complex to write down, and usually, they are solved using numerical methods. There are certain variables such as pressure, volume, or temperature, that can be used to describe such a system.
Cubic equations of state - Wikipedia
Cubic equations of state are a specific class of thermodynamic models for modeling the pressure of a gas as a function of temperature and density and which can be rewritten as a cubic function of the molar volume.
Ideal gas law - Wikipedia
The ideal gas law, also called the general gas equation, is the equation of state of a hypothetical ideal gas. It is a good approximation of the behavior of many gases under many conditions, although it has several limitations.
Equation of state (cosmology) - Wikipedia
In cosmology, the equation of state of a perfect fluid is characterized by a dimensionless number , equal to the ratio of its pressure to its energy density : It is closely related to the thermodynamic equation of state and ideal gas law.
Van der Waals equation - Wikipedia
The van der Waals equation, named for its originator, the Dutch physicist Johannes Diderik van der Waals, is an equation of state that extends the ideal gas law to include the non-zero size of gas molecules and the interactions between them (both of …
State function - Wikipedia
In the thermodynamics of equilibrium, a state function, function of state, or point function for a thermodynamic system is a mathematical function relating several state variables or state quantities (that describe equilibrium states of a system) that depend only on the current equilibrium thermodynamic state of the system [1] (e.g. gas, liquid ...
Category:Equations of state - Wikipedia
Pages in category "Equations of state" The following 18 pages are in this category, out of 18 total. This list may not reflect recent changes.
Equation of state | Definition, Ideal Gas, & Facts | Britannica
Equation of state, an equation that relates the values of pressure, volume, and temperature of a given substance in thermodynamic equilibrium. The simplest known example of an equation of state is the one relating the pressure P, the volume V, and the absolute temperature T of one mole of an ideal
Thermodynamics - Equations, State, Properties | Britannica
2024年10月21日 · Thermodynamics - Equations, State, Properties: The equation of state for a substance provides the additional information required to calculate the amount of work that the substance does in making a transition from one equilibrium state to …